Summary:
Zip code 82935 has seven listed schools—four elementary, one middle and two high—covering tested grades 3–10, with results that vary substantially by school and grade. Elementary and middle-school scores are often near or above state results, while high-school results are weaker overall and especially low at Expedition Academy. The most important takeaway is that a student’s school matters greatly: grade 10 ELA proficiency ranges from 18.2% to 69.8% among the two high schools.
Washington Elementary stands out for consistent performance: it exceeded state results in all seven reported subject-and-grade comparisons, by 1.1 to 17.4 percentage points. Other elementary schools have notable strengths: Monroe Elementary School led grade 3 ELA and math, while Harrison Elementary led grade 5 ELA and math at 73.7% and 84.2%. At the high-school level, Green River High School was 15.1 points above the state in grade 10 ELA and 5.5 points above in science. By contrast, Expedition was 36.5 points below the state in grade 10 ELA and 35.1 points below in science; its grade 10 math was 18.2%, compared with 45.0% statewide.
Recent trends are mixed: Truman Elementary had the largest average improvement across matched tests, up 12.3 points, and its SchoolDigger statewide percentile rose from 17th in 2023–24 to 61st in 2025–26. Harrison Elementary averaged a 9.5-point decline, while Expedition averaged a 12.4-point decline on its three matched comparisons. SchoolDigger placed Washington at the 74th percentile and Expedition at the 4th in 2025–26. School context differs too: Washington’s student-teacher ratio was 9.4 and its reported free/reduced-lunch eligible share was 44.7%; Expedition’s figures were 6.5 and 48.6%. These figures describe different school circumstances, but do not by themselves explain test results.
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